375
FNCA52 TJSJ 081930
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 PM AST MON JUN 8 2026
DISCUSSION
DRIER-THAN-NORMAL CONDITIONS WILL ENHANCE THE AVAILABILITY OF
BURNING FUELS ALONG THE SOUTHERN PLAINS OF PR AND THE USVI.
PRZ014-090800-
SOUTHEAST COASTAL PLAINS-
330 PM AST MON JUN 8 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLEAR CLEAR CLEAR MCLEAR
PRECIP TYPE SHOWERS NONE NONE NONE
CHANCE PRECIP (%) 10 0 0 0
TEMP (24H TREND) 72 (-3) 91 (+2) 72 90
RH % (24H TREND) 85 (-4) 48 (-8) 88 42
WIND 20FT/EARLY(MPH) E 13 E 13 E 8 E 12
WIND 20FT/LATE(MPH) NE 9 SE 17 E 9 SE 13
MIXING HGT(FT-AGL/MSL) 5150 5120
TRANSPORT WND (MPH) E 10 E 12
VENT RATE (KT-FT) 46350 51200
DISPERSION 5 5
DSI 3 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ015-090800-
SOUTHERN HILLS-
330 PM AST MON JUN 8 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLEAR MCLEAR CLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 10 10 0 10
TEMP (24H TREND) 69 (-3) 88 (+3) 68 88
RH % (24H TREND) 96 (+1) 56 (-9) 96 54
WIND 20FT/EARLY(MPH) E 10 E 10 E 9 E 9
WIND 20FT/LATE(MPH) E 10 SE 11 E 8 SE 10
MIXING HGT(FT-AGL/MSL) 5830 5930
TRANSPORT WND (MPH) E 9 E 9
VENT RATE (KT-FT) 46640 47440
DISPERSION 5 5
DSI 2 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ016-090800-
NORTH COASTAL PLAINS-
330 PM AST MON JUN 8 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLEAR MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS NONE NONE
CHANCE PRECIP (%) 10 10 0 0
TEMP (24H TREND) 72 (-3) 90 (0) 72 90
RH % (24H TREND) 96 (+1) 54 (-9) 95 54
WIND 20FT/EARLY(MPH) E 12 E 11 E 11 E 11
WIND 20FT/LATE(MPH) SE 11 E 17 SE 9 NE 17
MIXING HGT(FT-AGL/MSL) 4590 4770
TRANSPORT WND (MPH) E 10 E 10
VENT RATE (KT-FT) 41310 42930
DISPERSION 5 5
DSI 4 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ017-090800-
NORTHERN HILLS-
330 PM AST MON JUN 8 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLEAR MCLEAR CLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 10 20 0 10
TEMP (24H TREND) 69 (-3) 89 (0) 69 89
RH % (24H TREND) 98 (+1) 57 (-5) 97 55
WIND 20FT/EARLY(MPH) SE 11 E 9 E 9 E 9
WIND 20FT/LATE(MPH) SE 9 NE 13 SE 8 NE 13
MIXING HGT(FT-AGL/MSL) 5550 5780
TRANSPORT WND (MPH) E 7 E 7
VENT RATE (KT-FT) 33300 34680
DISPERSION 5 5
DSI 2 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ018-090800-
WEST COAST-
330 PM AST MON JUN 8 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLEAR MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 40 10 40
TEMP (24H TREND) 72 (-2) 91 (0) 72 91
RH % (24H TREND) 95 (+1) 57 (-7) 96 55
WIND 20FT/EARLY(MPH) SE 13 E 10 E 11 E 10
WIND 20FT/LATE(MPH) E 12 E 11 E 10 SE 10
MIXING HGT(FT-AGL/MSL) 4690 4920
TRANSPORT WND (MPH) E 6 SE 6
VENT RATE (KT-FT) 23450 24600
DISPERSION 5 5
DSI 4 5 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ019-090800-
EASTERN INTERIOR-
330 PM AST MON JUN 8 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLEAR MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 10 0 10
TEMP (24H TREND) 70 (-4) 89 (+2) 70 89
RH % (24H TREND) 97 (+1) 56 (-7) 95 54
WIND 20FT/EARLY(MPH) E 11 E 10 E 9 SE 9
WIND 20FT/LATE(MPH) E 11 E 11 SE 8 E 11
MIXING HGT(FT-AGL/MSL) 6470 6520
TRANSPORT WND (MPH) E 9 E 9
VENT RATE (KT-FT) 51760 52160
DISPERSION 5 5
DSI 3 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ022-090800-
LUQUILLO MOUNTAIN RANGE-
330 PM AST MON JUN 8 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLEAR MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 10 20 10
TEMP (24H TREND) 69 (-3) 83 (+3) 68 83
RH % (24H TREND) 98 (0) 62 (-12) 98 60
WIND 20FT/EARLY(MPH) E 9 E 9 E 8 E 9
WIND 20FT/LATE(MPH) E 9 SE 9 SE 5 E 9
MIXING HGT(FT-AGL/MSL) 4410 4280
TRANSPORT WND (MPH) E 9 E 10
VENT RATE (KT-FT) 35280 38520
DISPERSION 5 5
DSI 3 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ023-090800-
CENTRAL MOUNTAIN RANGE-
330 PM AST MON JUN 8 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLEAR MCLEAR CLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 10 40 0 30
TEMP (24H TREND) 67 (-3) 87 (+4) 66 87
RH % (24H TREND) 97 (+1) 59 (-8) 98 56
WIND 20FT/EARLY(MPH) SE 8 E 6 SE 6 E 6
WIND 20FT/LATE(MPH) E 8 E 8 SE 6 E 8
MIXING HGT(FT-AGL/MSL) 6640 6860
TRANSPORT WND (MPH) E 6 E 6
VENT RATE (KT-FT) 33200 34300
DISPERSION 5 5
DSI 2 6 1 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ024-090800-
CAYEY MOUNTAIN RANGE-
330 PM AST MON JUN 8 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLEAR MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS NONE
CHANCE PRECIP (%) 20 10 10 0
TEMP (24H TREND) 69 (-3) 84 (+2) 68 84
RH % (24H TREND) 99 (0) 61 (-10) 98 59
WIND 20FT/EARLY(MPH) E 9 E 8 E 8 E 8
WIND 20FT/LATE(MPH) E 8 E 10 E 5 E 9
MIXING HGT(FT-AGL/MSL) 5060 5130
TRANSPORT WND (MPH) E 9 E 10
VENT RATE (KT-FT) 40480 46170
DISPERSION 5 5
DSI 2 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ025-090800-
VIEQUES-
330 PM AST MON JUN 8 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLEAR MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 20 10 10
TEMP (24H TREND) 75 (-2) 87 (0) 75 88
RH % (24H TREND) 88 (-2) 58 (-6) 84 56
WIND 20FT/EARLY(MPH) E 13 E 11 E 11 E 10
WIND 20FT/LATE(MPH) E 13 E 10 E 10 E 10
MIXING HGT(FT-AGL/MSL) 3330 3520
TRANSPORT WND (MPH) E 13 E 12
VENT RATE (KT-FT) 36630 35200
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ026-090800-
CULEBRA-
330 PM AST MON JUN 8 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLEAR MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 20 10 20
TEMP (24H TREND) 76 (-3) 89 (+1) 76 89
RH % (24H TREND) 88 (0) 55 (-10) 85 54
WIND 20FT/EARLY(MPH) E 13 E 11 E 11 E 10
WIND 20FT/LATE(MPH) E 13 E 10 E 11 E 10
MIXING HGT(FT-AGL/MSL) 3220 3500
TRANSPORT WND (MPH) E 13 E 12
VENT RATE (KT-FT) 35420 35000
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ027-090800-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 PM AST MON JUN 8 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLEAR MCLEAR MCLEAR MCLEAR
PRECIP TYPE NONE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 0 10 0 10
TEMP (24H TREND) 74 (-2) 92 (+2) 73 91
RH % (24H TREND) 86 (-2) 47 (-9) 88 45
WIND 20FT/EARLY(MPH) E 17 E 14 E 10 E 13
WIND 20FT/LATE(MPH) E 16 SE 16 E 11 SE 14
MIXING HGT(FT-AGL/MSL) 5180 5230
TRANSPORT WND (MPH) E 10 E 12
VENT RATE (KT-FT) 46620 52300
DISPERSION 5 5
DSI 4 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ001-090800-
SAINT THOMAS AND SAINT JOHN-
330 PM AST MON JUN 8 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLEAR MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 10 10 10
TEMP (24H TREND) 75 (-4) 86 (+1) 76 86
RH % (24H TREND) 87 (-1) 59 (-8) 84 58
WIND 20FT/EARLY(MPH) E 14 E 11 E 11 E 11
WIND 20FT/LATE(MPH) E 13 E 10 E 11 E 10
MIXING HGT(FT-AGL/MSL) 3070 3330
TRANSPORT WND (MPH) E 13 E 12
VENT RATE (KT-FT) 33770 33300
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ002-090800-
ST CROIX-
330 PM AST MON JUN 8 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLEAR MCLEAR CLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 10 10 10
TEMP (24H TREND) 76 (-2) 87 (+1) 75 87
RH % (24H TREND) 86 (-3) 60 (-6) 86 58
WIND 20FT/EARLY(MPH) E 13 E 12 E 9 E 11
WIND 20FT/LATE(MPH) E 13 E 12 E 11 E 10
MIXING HGT(FT-AGL/MSL) 4420 4570
TRANSPORT WND (MPH) E 14 E 13
VENT RATE (KT-FT) 53040 50270
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
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